37
VSX-
8
21-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
CP1306 (pin 9)
Is there a data output?
(0 to 3.3
V
)
Yes
Check the parts and patterns
in the path IC1316.
N
o
Is the voltage 0 to 3.3
V
?
Is there a data 0 to 3.3
V
?
Yes
Check the parts and patterns
in the path pin 87 of IC1316.
N
o
Check the parts and patterns
in the path pin 89 of IC1316.
N
o
Check the parts and patterns
in the path pin 56 of IC1316.
N
o
Replace IC1316 or X1303.
Replace IC1303 or X1300.
N
o
SCDI_MAI
N
IC1303 (pin 21)
HR_RST
AD
V
_RST
Is the voltage 0 to 3.3
V
?
Check the parts and patterns
in the path pin 59 of IC1316.
N
o
Check the path to pin 13 of
IC1316. Replace IC1316.
N
o
Check the path to pin 4 of
IC1303. Replace IC1303.
Check the path to pin 1,2,6,7
of IC1312. Replace IC1312
or XTAL1300.
N
o
Check the path to pin 22 of
IC1302. Replace IC1302.
N
o
N
o
Replace IC1302 or X1301.
N
o
Is the voltage 0 to 3.3
V
?
IC1308 (pin 25)
Yes
IC1302 (pin 51)
ABT_RST
Yes
IC1311 (pin 63)
Yes
Yes
IC1316 (pin 15)
Is there a 16 MHz output?
Is there a 16 MHz output?
IC1316 (pin 13)
Yes
IC1303 (pin 5)
Yes
IC1303 (pin 4)
Yes
IC1311 (pin 7)(921,40,826)
Yes
IC1302 (pin 21)
Yes
IC1302 (pin 22)
Is there a 27 MHz output?
Is there a 27 MHz output?
Is there a 27 MHz output?
Is there a 28.63636 MHz
output?
Is there a 28.63636 MHz
output?
B
Step 4: X'TAL
To Step 4
Yes
To Step 5
Summary of Contents for VSX-521-K
Page 13: ...13 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 17: ...17 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F D MAIN ASSY C AMP ASSY D MAIN ASSY E SUBWOOFER ASSY ...
Page 21: ...21 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 22: ...22 VSX 821 K 1 2 3 4 A B C D E F 1 2 3 4 4 5 D MAIN BLOCK DIAGRAM for VSX 921 K T D MAIN ASSY ...
Page 23: ...23 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 27: ...27 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F only P CPU ASSY Not used ...
